baber/WOPTO huggingface dataset:
Patent GB-451542-A (GB)
Title: Improvements in or relating to rectifying valves and circuits
IPC: H01J17/04
Filed: 1935-09-02
Abstract: 451,542. Converting. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN, Emmasingel, Eindhoven, Holland. Sept. 2, 1935, No. 24472. Convention date, Oct. 11, 1934. [Class 38 (ii)] [See also Group XL] A rectifying valve comprises an incandes cent cathode 2 and a plurality of anodes which are arrange( equidistantly from, and preferably symmetric ally with respect to the cathode, and a least one of the anode is provided with means e.g. a shield 7, to in crease its negative blocking voltage above that of the other anodes. Secondary windings 3<1> .. 6<1> are connected through resistances to the respective anodes the voltages on which may be regulated by switches 23.. 26. The circuits of anodes 3, 4 and 5 are adapted to give rectified currents of different maximum values and the circuit of anode 6 to give a high-voltage current. A smaller transformer may be used if the currents in the various secondary windings flow in opposite directions. The cathode is energized by a secondary winding on the transformer.
Patent GB-387267-A (GB)
Title: Improvements in or relating to the manufacture of rubber
IPC: C08L7/00
Filed: 1932-09-02
Abstract: A softening agent for rubber compositions is made by heating rubber at or about its melting point to produce partial depolymerization. The heat treatment at about 250 DEG  C. is continued until the material is completely liquid, when it will solidify to a viscous mass on cooling.  The rubber which is heated may be raw natural rubber or rubber waste such as inner tube rubber.  The depolymerization may be promoted by the addition of up to 30 per cent by weight on the rubber of substances usually used as softening agents for rubber such as mineral and fatty oils and pitches.  The depolymerized rubber is applicable both to hard and soft rubber mixes, and is preferably used in amounts of from 2-10 per cent, depending on the amount of mineral fillers present.  It is stated that the use of depolymerized rubber enables sufficient softening agent to be used to prevent rise of temperature during manufacture without unduly modifying the properties of the rubber.
Patent GB-940828-A (GB)
Title: Improvements in type-writing and like machines
IPC: B41J13/042
Filed: 1962-06-26
Abstract: 940,828. Typewriters &c. HALDA A.B. June 26, 1962 [June 26, 1961], No. 24576/62. Heading B6P. In a typewriter or like machine wherein resiliently-loaded feed-rollers engage a platen mounted on a travelling carriage, the feed rollers are moved away from the platen for paper release by an operating shaft which is in two or more parts, and the parts can be coupled together for simultaneous release of all the rollers or can be uncoupled so that certain only of the rollers need be released. As shown two sets of feed rollers viz. 31, 311, 31<SP>11</SP> and 30, 30<SP>1</SP> and 30<SP>11</SP> are employed. Two rollers 31 are mounted on a shaft 34 carried by levers 21 pivoted on the carriage frame 5, and the four rollers 311, 31<SP>11</SP> are carried on a shaft 35 also carried by levers 21, the levers 21 being loaded by springs 24. Similarly, the two rollers 30 are mounted on a shaft 32 carried by levers 20 and the four rollers 30<SP>1</SP>, 30<SP>11</SP> are mounted on a shaft 33 also carried by levers 20, the levers 20 being loaded by adjustable springs 25. The ends of the levers 20, 21 remote from the rollers bear normally against flats 43 on a two-part operating shaft 15, 16; the parts 15, 16 can be coupled together by a sleeve 14 having slots at its ends engaging studs 42, 42<SP>1</SP> on the two parts, so that actuation of the shaft 16 by a lever 19 causes all the rollers to be released. If the parts are decoupled by moving the sleeve axially, actuation of the shaft 16 will cause the rollers 30<SP>1</SP>, 30<SP>11</SP>, 31<SP>1</SP>, 31<SP>11</SP> only to be released. The sleeve 14 is operated by a lever 1 connected by a link 10 to a lever 11 notched to engage a lug on the sleeve, the lever 1 being held in either coupling or uncoupling position by an overcentre spring 7.
Patent GB-509493-A (GB)
Title: Improvements in and relating to spinning machines
IPC: D01H5/22
Filed: 1937-10-09
Abstract: 509,493. Spinning yarn directly from slivers of bast and long - leaf fibres. MACKIE & SONS, Ltd., J., and MACKIE, J. P. Oct. 9, 1937, No. 24645. [Class 120 (ii)] In spinning flax, hemp, jute, and like slivers into yarns by using slip-draft devices as described in Specification 407,690, the sliver is supported over a length at least equal to a quarter of the reach by a roller which is grooved so as to restrict the spreading of the sliver. As shown in Fig. 1, a single driven grooved roller 24 is used and a condenser 26 is arranged relatively thereto so as to bear hardly on the sliver and thereby to exercise a slip-draft effect. Arrangements are described wherein more than one roller is used, the condenser serving only as a conductor, and, as shown in Fig. 4, an adjustable roller 36 is mounted between two driver rollers 35, 37, the drawing-roller 12 being of reduced diameter to permit the close arrangement of the roller 37 and the consequent omission of the condenser. The grooves may be U-shaped or rectangular, or may be, in effect two grooves united by a U-shaped or semicircular rib, Fig. 5... 8 (not shown). The Provisional Specification describes also the use of one of the retaining-rollers as a slipdraft roller, it being made larger than usual and rollers being provided to ensure contact of the sliver therewith ; and also the use of a large intermediate slip-draft roller with a plain surface.
Patent GB-919085-A (GB)
Title: Improvements relating to roller arms for textile drafting frames
Inventor: REED ROYSTON MAURICE
IPC: D01H5/52
Filed: 1960-07-15
Abstract: 919,085. Drafting-arrangements. WESTINGHOUSE BRAKE & SIGNAL CO. Ltd. July 14, 1961 [July 15, 1960], No. 24685/60. Class 120 (2). The top rollers of drafting apparatus are loaded by pneumatic cylinders 01, 03 adjustably mounted along a roller arm, to and from which air is supplied and vented by a valve N operated by a locking lever L coupled with the arm as the latter is lowered and raised. The lever L is pivoted at A to the arm H which is itself pivoted at B to a bracket J. The latter carries the valve N and is secured to a bar K which has an upper flat permitting the arm to be accurately positioned. It also has a projection E engaged on either side by a spring- catch D also pivoted at A and carried by arm H to secure the arm in raised or lowered position. Each cylinder comprises a fixed piston S through which air is admitted, when the valve is operated by a projection N on the arm L, to a cylinder secured to a piston member P bearing on the roller R and guided to travel vertically by arms depending from a hooded member T secured to the fixed piston S. When the arm is to be raised, lever L is first lifted and immediately operates valve N to vent the cylinders, but does not begin to raise the arm until lostmotion represented by a clearance C is taken up, whereupon it releases catch D and lifts the arm. The apparatus provides for an equal loading of all the rollers which can be changed by a master valve in the supply to valve N; the loadings of individual rollers may, however, be varied by changing the cylinders.
Patent GB-165686-A (GB)
Title: Improvements in and relating to electrical measuring instruments
IPC: G01R27/02
Filed: 1920-04-25
Abstract: 165,686. Clark, W., and Clark's Neo- Electric Devices, Ltd. Aug. 25, 1920. Casings; resistances, measuring.-A resistancemeasuring instrument c, a current-generating element f, and a gear i for driving the latter, all requiring co-operative alignment, are combined with a common base-plate a upon which each is rigidly mounted and which forms the actual base of the composite instrument. A sheet-metal casing h is detachably screwed as by screws m to the base. The handle for driving the gear may be of the form described in Specification 161,046, [Class 136 (ii), Velocipede &c. driving-mechanism].
Patent GB-1222381-A (GB)
Title: Organosilicon compounds
Inventor: PEARCE CHRISTOPHER ARTHUR
IPC: C08L83/04
Filed: 1967-05-26
Abstract: 1,222,381. Cyclic silazanes. MIDLAND SILICONES Ltd. 17 May, 1968 [26 May, 1967], No. 24693/67. Heading C3S. Bicyclotetrasilazanes of the general formula and amino-cyclodisilazanes of the general formula wherein R is C 1-5  alkyl, monocyclic aryl, vinyl or allyl and R<SP>1</SP> is C 1-5  alkyl or allyl, are prepared by heating under anhydrous conditions a tris (amino)silane RSi(NHR<SP>1</SP>) 3 . Compounds (I) are produced when the temperature is above 210‹ C.; compounds (II) when it is from 130‹ to 210‹ C. An acidic catalyst is preferably used, e.g. H 2 SO 4 , ammonium sulphate and alkylammonium salts. The intermediate compounds (II) may be isolated and heated further to produce (I). Also formed as intermediates are compounds of the formula as are compounds of the formula and these may also be used to prepare (I).
Patent GB-500177-A (GB)
Title: Improvements in sheaf-binding harvesters for the tensioning or slackening of an elevator cloth feeding the grain
IPC: A01D61/00
Filed: 1938-08-23
Abstract: 500,177. Binding-apparatus. AKTIEBOLAGET WESTERASMASKINER. Aug. 23,1938, No. 24823. Convention date, March 5. [Class 6 (iii)] )] To enable the cloths to extend to the ends of the rollers of the elevators of binders the tensioning device is arranged within the end of the rollers or partly within the rollers and partly on the outside of the side walls of the elevator. A metal sleeve 5 is fitted in the end of the roller 4 and in the space 6 provided a' hearing sleeve 7, carrying a roller or ball bearing.8 for a pin 9 projecting from the end of the roller, is placed. The sleeve 7 is pivoted on a pin 10 that projects through the elevator wall 2 and is fixed in a plate 11 fitted on the exterior thereof. An arcuate slot 13 formed in the elevator wall and the plate 11 acts as a guide for a pin 12 on the sleeve 7, and is so positioned as to give an overshot toggle action when the roller 4 is moved to bring the elevator loth into stretched condition. In a modifica.- tion the pin 12 is secured to the outer plate which is pivoted on the pin 10, this pin being screwed and provided with a nut so that the outer plate may be clamped in a desired position.
Patent GB-774961-A (GB)
Title: Improvements in or relating to production of tyrosine
Filed: 1955-08-30
Abstract: L-Tyrosine is obtained in an improved crystalline form by admixing with an aqueous solution containing tyrosine (preferably between 5 and 15 grams per litre), sufficient non-oxidizing mineral acid, preferably HCl, to adjust the pH of said solution to between 1.3 and 2.2, heating the resulting solution to between 50 DEG  and 100 DEG C., preferably between 70 DEG  and 90 DEG  C., until substantially all of the tyrosine has dissolved and allowing the hot solution to cool at an average rate of less than 0.25 DEG  C. per minute to a temperature between atmospheric temperature and 60 DEG  C., when the tyrosine crystallizes out.  After separation of the tyrosine crystals, the mother-liquors are recycled by the addition of more tyrosine.  The crystals (glossy white needles) have a size up to about 2.5 mm. by about 0.015 mm. (average size 0.2 mm. X 0.015 mm.) and the ratio of length/width is from 20:1 to 5:1.  In examples: (1) tyrosine is mixed with water and acidified with HCl to pH 1.8, decolorising carbon is added, and the mixture heated and stirred at 85 DEG  C. for 10 minutes, filtered hot and allowed to cool without agitation, yielding tyrosine as needles, which are washed and dried at 105 DEG  C.; (2) tyrosine is dissolved in mother-liquors from (1) and the solution treated as before.
Patent GB-1031617-A (GB)
Title: Torque transmitting resilient joint and manufacturing method
IPC: F16D3/68
Filed: 1964-06-16
Abstract: 1,031,617. Universal joints. SOC. APPLICAZIONI GOMMA ANTIVIBRANTI S.A.G.A. S.p.A. June 16, 1964 [Jan. 24, 1964], No. 24851/64. Heading F2U. In a universal joint comprising rubber pads 9 interposed between and bonded to alternating radial fins 6, 8 of an internally flared rim 3 and a hub 7, respectively, the rubber pads are precompressed by imparting a permanent radial deformation to the rim 3, e.g. by forcing the rim through reducing dies. After deformation, the rim 3 is welded to spokes 4 of a hub 1 (Fig. 1, not shown). In a double-joint (Fig. 7, not shown) the rims 3, 3a of two similar couplings are secured together by interengaging dogs 13 welded together, and the hubs 2, 2a of the couplings are centred by a ball-and-socket joint 10.
Patent GB-422540-A (GB)
Title: Process for the production of a solid product containing available chlorine and highly insensitive to the influence of temperature
IPC: C01B11/06
Filed: 1934-08-30
Abstract: In the production of solid hypochlorite-chloride mixtures by the action of chlorine on finely divided alkali hydroxide such as sodium hydroxide, the rate of chlorination is so controlled that temperatures well above 30 DEG  C. and preferably of about 60 DEG  C. are attained in the reaction mixture.  In carrying out the process the hydroxide is subjected to intensive agitation in the reaction vessel, and the latter cooled, if necessary, to maintain the temperature at about 60 DEG  C.  The reaction product is highly insensitive to temperature and may contain, according to an example, 23 per cent of available chlorine.
Patent GB-1116213-A (GB)
Title: Optical scanning apparatus for detecting changes of quality of a material
IPC: B65H63/06
Filed: 1964-06-16
Abstract: 1,116,213. Determining a quality of a material photo-electrically. C. GUNN-RUSSELL. June 21, 1965 [June 16, 1964], No.24992/64. Heading G1A. An apparatus wherein a quality is determined by optical scanning and which results in the production of a signal having frequency components between f and F modulated on a carrier, comprises an amplifier for the modulated carrier signal, a demodulator, a quality fault response device, and a circuit substantially non-responsive to frequency components greater than f connected as a reference signal so as to minimize the response of the device to long term changes at the output of the transducer. A yarn 16, Fig. 4 (not shown) runs through a head past the radiation from a light source such as a gallium arsenide emitter driven by an oscillator at the carrier frequency, and the electrical signal developed on a photo-diode 17 is applied to operate a relay and thus a cutting device through an amplifier and a differential circuit such as Fig. 1 in which the positive going part of the waveform is applied to capacitors 1, 2 the former of which is small compared to the latter and thus responds to rapid changes such as those caused by a slub. The resistor network is such that R6 XR8 = R7 XR4 and resistors 6 and 7 are small in comparison with resistors 4 and 8. The voltage across capacitor 2 follows that across capacitor 1 for slow changes. The radiation source need not be modulated, a D. C. lamp may be used and the detected radiation applied to modulate a carrier in a conventional circuit. An alternative push-pull circuit is described with reference to Fig. 3 (not shown).
Patent GB-738715-A (GB)
Title: Method and device for the manufacture of artificial threads from high-polymer compounds, and the threads thus manufactured
IPC: D01D5/092
Filed: 1953-09-09
Abstract: <PICT:0738715/IV (a)/1> Automatic ventilation of the spinning cell, of melt-spinning apparatus for the production of filaments from thermoplastic compounds, is brought about by arranging the cell so that the upper end is closed by the spinneret assembly, and constructing the cell so that the upper part of the wall is imperforate and at least a portion of the wall immediately below the upper part is perforated axially symmetrically for allowing hot air in the cell to emerge automatically.  The air current which moves upwardly through the cell and through the perforations, may be strengthened by providing for an additional automatic upward movement of air along the outer surface of the cell.  Preferably, at least 10 cm. of the spinning cell at the upper end is left imperforate.  The perforated portion of the spinning cell may extend to the lower end but in the case of a long cell, the perforated zone may extend for about 100 cm.  The lower end of the cell may be open at the bottom or may have axially symmetrical holes for admission of fresh air.  The diameter of the perforations for escape of the hot air may decrease in the direction from top to bottom of the cell or if the holes are of the same diameter, the number of holes per unit of surface may be decreased in the same direction.  The holes may be circular or of slit-, or other shape.  The thermoplastic compound employed for melt spinning may be a polyvinyl compound, polyacrylic acid derivative, polyacetal, polyester, polyether, or polyamide.  As shown, a spinning cell 1 is surrounded at the upper end by a heat insulating collar 2 and there connected to a spinning head 3 with spinneret 4.  The upper part 5 of the cell is imperforate over the length h1 but in the part 6, the cell is perforated over the length h2.  The bottom 7 of the cell is open.  The cell is surrounded by a shaft 9 which is open at top and bottom.  During operation, fresh air enters at 7 and rises through the spinning cell 1.  It cools the hot filaments 8 and is heated by them.  The hot air emerges through the perforations into the cylindrical space 14.  As a result of the air emerging from the spinning cell and the hot outer surface of the cell an upward pressure is formed in the space 14 and this pressure causes an additional stream of cold air to enter the bottom of the shaft 9 and pass upwardly through the space 14.  If desired several bundles of filaments may be passed through a single spinning cell.
Patent GB-1468597-A (GB)
Title: Apparatus for fault detection in a three-phase network
IPC: H02H3/353
Filed: 1974-06-05
Abstract: 1468597 Protective arrangements BBC BROWN BOVERI & CO Ltd 5 June 1974 [7 June 1973] 25001/74 Heading H2K Distance protection apparatus responsive to faults in a three-phase electrical transmission line comprises for each phase line a respective amplitude comparison circuit Gl 1 , Gl 2 , R 3 , whose first input is connected to receive a signal representative of the phase-to-ground, or phase-toneutral, voltage U R  of the respective phase line and whose second input is connected to receive a signal representative of the phase-to-phase voltage U ST  between the other two phase lines, the amplitude comparison means being followed by a threshold switch S s  which delivers a fault signal when the difference in amplitude of these two signals exceeds a predetermined magnitude. This predetermined magnitude may be zero. The amplitudes of the two signals are adjustable by variation of the tapping points S t  on transformers connected to the transmission line. The outputs of all the threshold switches are connected to a distance selective trigger L of the protective device. This distance selective trigger L comprises AND and OR circuits and produces for each fault condition a set of signals which determine the type and location of the fault and are fed to trip circuits A 2  in conjuction with non- selective response means A, or further protection circuits 5.
Patent GB-388094-A (GB)
Title: Improvements in or relating to valve-gear for internal combustion engines
IPC: F01L13/00
Filed: 1931-09-05
Abstract: 388,094. Starting. ALLGEMEINE ELEKTRICIT€TS-GES., 2, Friedrich Karl- Ufer, Berlin. Sept. 5, 1931, No. 25004. Convention date, Dec. 19, 1930. [Class 7 (v).] The compressed-air starting valve a is actuated by a cam b through a lever c pivotally mounted at n on the end of an arm of a lever k, the other arm of which is movable by the action of compressed air on a piston g to put the gear into operation when the compressed air is turned on. As shown, the piston g is. coaxial with the valve spindle e, which is guided by the tubular piston rod f. The movement of the piston is limited by the engagement of a flange on the piston rod with stops l, m. The compressed-air supply is admitted to the conduit q by a valve r. The valve lever c is held by a spring d in engagement with the valve spindle e, and is connected by a link with a rod p provided with a roller o actuated by the cam b. In the event of the valve a encountering unusual resistance, the lever k moves about its pivot against the air pressure on the piston g.
Patent GB-223913-A (GB)
Title: Improvements in or relating to hair curlers
IPC: A45D2/18
Filed: 1924-10-21
Abstract: 223,913. Hayes-Meserole Manufacturing Co., Inc., (Assignees of Meserole, M. D.). Oct. 22, 1923, [Convention date]. Hair-curling appliances.-A hair curler consists of a single piece of covered flexible wire folded to form three members 10, 11, 12, secured at the centre by a clip 13. The hair is first secured by folding one or both of the single tongues 14, 15 down upon it, wound in the usual manner around the curler, and then secured by folding down the looped ends of the wire. Fig. 4 shows a modification, and Fig. 6 a form in which three separate pieces of wire are used.
Patent GB-641410-A (GB)
Title: Improvements in or relating to safety pins
IPC: A44B9/14
Filed: 1948-09-24
Abstract: 641,410. Safety pins. KRAMER, H. W. Sept. 24, 1948, No. 25044. [Class 43] A safety pin comprises a rigid rectangular frame 1, a pin 5 movable between the two long sides of the frame having a bent end 6 which, together with the short side 2 of the frame, is surrounded by a plate member 3 so that the pin 5 and member 3 can swivel freely on said side 2. The bend of the pin lies in a hole 4 formed near the left-hand edge, Fig. 1, of the member 3 A sheath 7 is provided near its 'left-hand side with an opening 8 the material from the opening being bent round one limit of the frame 1 to secure the sheath thereto. In use, a flat extension 10 of the member 3 is gripped, and the pin 5 is inserted through the fabric then pushed back to and through the opening 8, whereupon it springs to the closed position at the right-hand side of the sheath.
Patent GB-1432176-A (GB)
Title: Cast-iron for making brake shoes
IPC: C22C37/00
Filed: 1973-05-25
Abstract: 1432176 Cast iron UEDASA CHUZO-SHO KK 25 May 1973 25045/73 Heading C7A A cast iron of composition:- which may be used in the manufacture of railway vehicle brake shoes.
Patent GB-1103026-A (GB)
Title: Low-frequency induction melting furnace plants
IPC: H05B6/06
Filed: 1965-06-14
Abstract: 1,103,026. Low frequency induction furnaces. ALLMANNA SVENSKA ELEKTRISKA A.B. 14 June, 1965 [18 June, 1964], No. 25046/65. Heading H2H. In, a low-frequency induction furnace, the heating coil is divided into three equal parts which may be serially connected for heating as a single phase load together with an L.C. line current balancing arrangement, or in star or delta to the same supply as an induction stirrer. Phase compensating capacitors 16, 17 may be provided.
Patent GB-805032-A (GB)
Title: Improvements in or relating to valves for controlling the flow of bitumen, tar emulsion or the like
Inventor: GALLOWAY FRED
IPC: F16K1/36
Filed: 1954-08-30
Abstract: 805,032. Valves. GRANT, GALLOWAY & GEAR, Ltd. Aug. 5, 1955 [Aug. 30, 1954], No. 25105/54. Class 135. A valve for controlling the flow of bitumen, tar emulsion or the like has a cup-shaped valve member 6 the mouth of which is formed as a knife edge 7 which co-operates with a valve seating 1. The valve member 6 is connected by a swivel 10 to a spindle 9 rotatable by an arm 14 and is given a combined axial and rotary movement by a cam 11 fixed to the spindle and having a cam face or edge 11a co-operable with a complementary cam edge 12a. The valve member is arranged within a spray bar 4 to which a part 13 carrying the cam edge 12a and a gland 17 is fixed. The valve spindle is loaded by a spring 15 housed within a bonnet 16 screwed to the part 13. The valve seating 1 is formed on a flanged ring 2 fixed to the spray bar and carrying a jet 3 with inlet ports 5. In place of the cam edges 11a, 12a, a pin fixed to the spray bar may engage a cam groove in the valve spindle.